JP2003188985A - Wireless headset, helmet using the same, internet telephone system, on-board hands-free system, communication system, credit processing system, and cash service system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless headset from which a call switch and switches for turning up and turning down a receiving volume are removed, a helmet using the wireless headset, an Internet telephone system, an on-board hands-free system, a communication system, a credit processing system, and a cash service system. <P>SOLUTION: Voice of a speaker is inputted to a microphone 2, and an output by comparing an output signal of the microphone 2 with first reference data at a controller 9 makes a telephone off-hook. While a telephone call is in progress, call data is compared with second reference data at the controller 9, and according to the difference, an amplifying degree of a second amplifier 8 which drives a speaker 3 is made variable. When voices of the party on the other end and a speaker are lower than a specified value, the speaker 3 sounds an alarm, and the telephone is made on-hook after a lapse of a predetermined time. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless headset in which a communication device and a headset are wirelessly connected to each other, a helmet using the wireless headset, an internet telephone system, a hands-free system for vehicles, a communication system, and a credit processing system. And a cash service system.

[0002]

2. Description of the Related Art Recently, as a wireless headset system conforming to the Bluetooth standard, which eliminates a cable connecting a headset and a mobile phone, a system shown in FIG. 6 is known.

In FIG. 6, 100 is a wireless headset, 110 is a microphone, 120 is a speaker, 130 is a call switch for off-hook and on-hook, 140.
Is a switch for increasing the listening volume, 150 is a switch for reducing the listening volume, and 160 is a mobile phone. The wireless headset system has a microphone 11
0, a speaker 120, a call switch 130, a switch 140 for increasing the reception volume, and a switch 150 for decreasing the reception volume, the wireless headset system 100 and a mobile phone 160. Transmission and reception are performed between the wireless headset 100 and the mobile phone 160.

[0004]

However, when the mobile phone 160 receives a call from the other party, the call switch 130 on the wireless headset 100 side is pushed,
Must be off-hook. If the volume from the speaker 120 is low during a call, the switch 140 on the side of the wireless headset 100 is pushed to increase the volume, or conversely, if the volume from the speaker 120 is high, the wireless headset 100. The switch 150 on the side must be pressed to reduce the volume. Even when the call ends, the call switch 130 must be pressed to put it in the on-hook state. As described above, the call switch 130, the switch 140, and the switch 150 provided on the wireless headset 100 side must be operated according to the respective states of the call start, the call in progress, and the call end. However, wireless headset 10
Call switch 130 and switch 140 provided on the 0 side
Since the switches 150 are arranged in a small space, it is apt to cause an erroneous operation when operated by blind touch.

The present invention is a wireless headset in which a call switch, a switch for increasing a listening volume and a switch for reducing a listening volume are removed, a helmet using the same, an internet telephone system, a hands-free system for a vehicle, An object of the present invention is to provide a communication system, a credit processing system and a cash service system.

[0006]

To achieve this object, a wireless headset according to the present invention comprises a communication section for wirelessly connecting to a communication device, and a voice CODEC connected to this communication section. , A first amplifier connected to the audio CODEC, a microphone connected to the first amplifier, a second amplifier connected to the audio CODEC, and an electroacoustic connected to the second amplifier A converter,
A control unit connected to the communication unit, a storage unit connected to the control unit, an A / D converter provided between the control unit and the first amplifier, the control unit and the A D / A converter provided between the second amplifier and the second amplifier, wherein the storage unit has predetermined first reference data (W), basic data (X), allowable data (ε), and The third reference data (Y) and the fourth reference data (Z) are stored, an incoming signal is received from the communication device via the communication unit, and a signal corresponding to the incoming signal is input to the voice CODEC. When the output signal is sent from the voice CODEC to the second amplifier and the acoustic transducer is driven by the second amplifier, the voice of the speaker is input to the microphone,
A signal corresponding to this voice is output from the microphone to the first amplifier, the output signal of the first amplifier is A / D converted by an A / D converter, and output from the A / D converter. The voice data and the first reference data (W) stored in the storage unit are compared in the control unit, and when the voice data exceeds the first reference data (W),
An off-hook signal is output from the control unit to the communication unit, a call mode is switched to, a voice of a speaker is input to the microphone during the call mode, and an output signal of the microphone is input to the first amplifier. The output of the first amplifier is A / D converted by the A / D converter, and the call data after the A / D conversion, the basic data (X) and the allowance data (ε) stored in the storage unit are stored. The second reference data {(X-ε) to (X +
ε)} in the control unit, and if the call data exceeds (X + ε) of the second reference data, depending on the difference between the call data and the (X + ε),
The control unit increases the amplification degree of the second amplifier that drives the acoustic transducer, and the call data is transferred to the second amplifier.
Of the reference data {(X−ε) to (X + ε)}, the acoustic converter is driven by the amplification degree of the second amplifier predetermined by the control unit, and the call data is When it is less than (X-ε) in the second reference data, the second amplifier that drives the acoustic transducer by the control unit according to the difference between the call data and the (X-ε). Of the communication data after the A / D conversion and the third reference data (Y) stored in the storage unit are compared in the control unit and transmitted from the communication device. The control unit compares the voice data output via the communication unit with the fourth reference data (Z) stored in the storage unit, and the communication data is transmitted from the communication device and the communication unit. Any of the audio data output via When it is smaller than the third reference data (Y) and the fourth reference data (Z), the electroacoustic transducer gives a warning sound to the speaker, and after the warning sound, a predetermined time elapses, and When both the call data and the voice data transmitted from the communication device and output via the communication unit are smaller than the third reference data (Y) and the fourth reference data (Z), respectively,
An on-hook signal is output from the control unit to the communication unit. With this configuration, it is possible to realize a wireless headset without the call switch, the switch for increasing the listening volume, and the switch for reducing the listening volume.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention includes a communication unit for wirelessly connecting to a communication device,
The voice CODEC connected to this communication unit and this voice C
A first amplifier connected to the ODEC, a microphone connected to the first amplifier, a second amplifier connected to the audio CODEC, and an electroacoustic transducer connected to the second amplifier. A control unit connected to the communication unit, a storage unit connected to the control unit, the control unit and the first unit.
A D / A converter provided between the control unit and the second amplifier, and a predetermined D / A converter is provided in the storage unit. 1 reference data (W), basic data (X), permissible data (ε), third reference data (Y), and fourth reference data (Z) are stored, and the communication device is connected via the communication unit. The incoming signal is received from the terminal, and the signal corresponding to the incoming signal is the voice CODE.
C, the output signal is sent from the voice CODEC to the second amplifier, and when the acoustic transducer is driven by the second amplifier, the voice of the speaker is input to the microphone. A signal corresponding to a voice is output from the microphone to the first amplifier, the output signal of the first amplifier is A / D converted by an A / D converter, and the sound output from the A / D converter is output. The control unit compares the data with the first reference data (W) stored in the storage unit, and if the audio data exceeds the first reference data (W), the control unit performs the The off-hook signal is output to the communication unit, the mode is switched to the call mode, the voice of the speaker is input to the microphone during the call mode, and the output signal of the microphone is input to the first amplifier, and the output signal of the first amplifier is input. Output the A / D A / D conversion by the vessel, the A /
The second reference data {(X-ε) calculated by the control unit based on the D-converted call data, the basic data (X) and the allowance data (ε) stored in the storage unit. ) ~
(X + ε)} in the control unit, and if the call data exceeds (X + ε) of the second reference data, the above-mentioned When the amplification degree of the second amplifier that drives the acoustic transducer is increased by the control unit and the call data is within the second reference data {(X−ε) to (X + ε)}, If the call level is less than (X-ε) of the second reference data, the acoustic converter is driven by the amplification degree of the second amplifier that is predetermined by the controller, and the call data is less than (X-ε). And (X-ε), the amplification degree of the second amplifier that drives the acoustic transducer is reduced by the control unit, and the call data after the A / D conversion and the storage unit are stored in the storage unit. The stored third reference data (Y) and the stored control And comparing the voice data transmitted from the communication device and output via the communication unit with the fourth reference data (Z) stored in the storage unit in the control unit, If both the call data and the voice data transmitted from the communication device and output through the communication unit are smaller than the third reference data (Y) and the fourth reference data (Z), respectively, the electrical data is output. A warning sound is emitted to the speaker from the acoustic transducer, and after the warning sound, both of the call data and the voice data transmitted from the communication device and output through the communication unit are respectively output after the predetermined time elapses. If smaller than the third reference data (Y) and the fourth reference data (Z),
Since the control unit outputs the on-hook signal to the communication unit, a wireless headset without the call switch, the switch for increasing the listening volume and the switch for reducing the listening volume is realized. It has the effect of being able to.

According to a second aspect of the invention, in the first aspect of the invention, the control unit updates the basic data (X) previously stored in the storage unit according to the call data of the speaker. Therefore, there is an effect that basic data suitable for the volume of each speaker can be obtained.

According to a third aspect of the present invention, in the second aspect of the invention, the average value of the call data of the speaker per constant time and the second reference data {(X-ε) to (X + ε)}.
When the average value exceeds or is less than the second reference data {(X−ε) to (X + ε)}, the control unit compares the basic data (X) with If the average value is updated and the average value is within the second reference data {(X−ε) to (X + ε)}, the basic data (X) is not updated, so that the speaker It is possible to prevent the amplification degree for driving the acoustic transducer from being increased or decreased due to the sudden loudness of the sound.

According to a fourth aspect of the present invention, in the first aspect of the invention, since the electroacoustic transducer is a bone conduction speaker, the speaker is based on the voice data sent from the communication device via the communication section. It is not necessary to use an electro-acoustic transducer that seals the speaker's ear when transmitting voice to, and not only there is a feeling of openness, but also it is possible to quickly respond to emergency calls and other information. It has the effect of being able to.

According to a fifth aspect of the present invention, in the third aspect of the invention, the bone conduction speaker is arranged at a predetermined position in the peripheral portion of the speaker's ear, so that the voice can be accurately transmitted to the speaker. Has the effect of being able to convey.

According to the invention of claim 6, in the invention of claim 5, since the bone conduction speaker is arranged so as to press the head of the speaker, the voice is accurately transmitted to the speaker. It has the ability to

According to a seventh aspect of the present invention, in the first aspect of the invention, the voice of the speaker is input to the microphone in advance, the output signal of the microphone is input to the first amplifier, and the output signal of the first amplifier is input. The output signal of the amplifier is A / D converted by the A / D converter,
The control unit analyzes the frequency spectrum based on the signal output from the A / D converter, and the processed data is registered in the storage unit as formant frequency data. It has the effect that various processes can be performed based on the formant frequency data.

According to an eighth aspect of the present invention, in the invention according to the seventh aspect, the control unit analyzes the frequency spectrum of the call data, and the processed data and the speaker stored in advance in the storage unit are used. When the processed data includes the formant frequency data in comparison with the formant frequency data in the control unit, amplification of the second amplifier for driving the electroacoustic transducer by the control unit according to the call data. It has the effect that the degree can be varied.

According to the invention described in claim 9, in the invention described in claim 7, the formant frequency data stored in advance in the storage unit is used as the PIN code, so that highly secure connection authentication can be performed. Have an effect.

According to a tenth aspect of the present invention, in the first aspect of the invention, the wireless connection with the communication device is Blu.
In order to comply with the Bluetooth standard, Bluetooth
It has the effect of enabling voice and data communication by making use of the features that comply with the standard.

An eleventh aspect of the present invention includes a wireless headset according to the tenth aspect, a communication device wirelessly connected to the wireless headset conforming to the Bluetooth standard and having a credit processing function, and a Bluetooth device. Since it is a credit processing system that uses an address as a personal identification number when processing credits, not only can voice and data communication that makes use of the features compliant with the Bluetooth standard, but also you can quickly shop at a store without using a credit card. It has the effect of being able to

According to a twelfth aspect of the present invention, there is provided a wireless headset according to the ninth aspect, and a communication device which is wirelessly connected to the wireless headset in conformity with the Bluetooth standard and has a cache service processing function. The Bluetooth address is used as the personal identification number when receiving the cache service, and the PIN code is used as the personal identification number when receiving the cache service.
Not only can voice and data communication that makes use of the features that comply with the Bluetooth standard, but also that cash services can be received quickly and with high security without using a credit card or cash card.

According to a thirteenth aspect of the present invention, in the invention according to the ninth aspect, since the PIN code has been subjected to predetermined arithmetic processing in the control section based on the formant frequency data, a special input device or It has an effect that a highly secure PIN code can be generated inside the wireless headset without using a peripheral device.

According to a fourteenth aspect of the present invention, in the first aspect, the wireless connection between the wireless headset system and the communication device is IEEE802.11a,
IEEE 802.11b or IEEE Wireless 13
Since it conforms to any of the 94 standards, it has the effect of enabling high-speed communication of voice and data.

According to a fifteenth aspect of the invention, in the invention according to the first aspect, since the microphone is a bone conduction microphone,
It has the effect of reducing noise input to the microphone.

According to a sixteenth aspect of the present invention, there is provided a communication device,
The calling mode selected in advance on the communication device side is communicated from the communication unit of the communication device to the communication unit on the wireless headset side according to claim 1, and the calling mode is stored in the storage unit on the wireless headset side. Since the communication system is configured as described above, there is an effect that it is not necessary to provide a switch for selecting a calling mode on the wireless headset side.

According to a seventeenth aspect of the invention, in the invention according to the sixteenth aspect, the calling mode is either a vibrate mode or a ring tone mode. Therefore, the calling mode should be an optimum one depending on the environment of use. It has the effect that

The invention according to claim 18 is a helmet equipped with the wireless headset according to claim 1, and therefore has an effect of enabling voice and data communication without operating a switch in the helmet. .

The invention described in claim 19 is an internet telephone system comprising the wireless headset according to claim 1 and a communication device having an internet telephone function wirelessly connected to the wireless headset. It has an effect that it is possible to make a call while working with both hands without operating the switch on the wireless headset side by both hands.

The invention according to claim 20 is a hands-free system for a vehicle, comprising the wireless headset according to claim 1 and a communication device having a telephone function wirelessly connected to the wireless headset. , Has the effect of enabling voice and data communication without having to manually operate the switch on the wireless headset side while driving.

According to a twenty-first aspect of the present invention, the wireless headset according to the ninth aspect and the wireless headset and a communication device that is wirelessly connected in conformity with the Bluetooth standard are provided, and communicates with the wireless headset. Since it is a communication system that uses a PIN code derived by predetermined arithmetic processing in the control unit based on formant frequency data for authentication when wirelessly connecting to a device, a special interface for inputting the PIN code is used. This has the effect of eliminating the need to provide.

FIG. 1 shows an embodiment of the present invention.
It will be described with reference to FIG.

(Embodiment 1) FIG. 1 is a schematic configuration diagram of a communication system including a wireless headset and a mobile phone according to Embodiment 1 of the present invention, and FIG. 2 is a schematic configuration diagram of the wireless headset. .

In FIG. 1, 1 is a wireless headset, 2 is a microphone, 3 is a speaker as an electroacoustic transducer, and 4 is a mobile phone as a communication device. A wireless headset 1 having a microphone 2 and a speaker 3 and a mobile phone 4 constitute a communication system.

In FIGS. 1 and 2, 5 is a communication unit for performing wireless transmission / reception with the mobile phone 4 in accordance with the Bluetooth standard, and 6 is a voice COD connected to the communication unit 5.
EC and 7 are first amplifiers connected to the audio CODEC 6, and the microphone 2 is connected to the first amplifier 7. Reference numeral 8 is a second amplifier connected to the audio CODEC 6, and the speaker 3 is connected to the second amplifier 8. 9 is a control unit connected to the communication unit 5 and 10 is a control unit 9
And a storage unit 11 connected to the control unit 9 and the first amplifier 7
Is a D / A converter provided between the control unit 9 and the second amplifier 8.

The off-hook operation of the wireless headset 1 will be described below. Predetermined first reference data (W), basic data (X), allowable data (ε), third reference data (Y), and fourth reference data (Z) are stored in the storage unit 10 in advance. An incoming signal is received from the mobile phone 4 via the communication unit 5, a signal corresponding to this incoming signal is input to the voice CODEC 6, an output signal is sent from the voice CODEC 6 to the second amplifier 8, and the second amplifier 8 When the speaker 3 is driven by, the voice of the speaker is input to the microphone 2, the signal corresponding to this voice is output from the microphone 2 to the first amplifier 7, and the output signal of the first amplifier 7 is changed to A The A / D converter 11 performs A / D conversion, the audio data output from the A / D converter 11 and the first data stored in the storage unit 10.
When the voice data exceeds the first reference data (W), the control unit 9 outputs an off-hook signal to the communication unit 5 to switch to the call mode. As a result, the call switch for off-hook, which is conventionally required, can be removed.

Next, an operation in which the off-hook signal is output from the control unit 9 to the communication unit 5 to switch to the call mode and the call mode is in effect will be described. After switching to the call mode, the voice of the speaker who enters the microphone 2 is output from the microphone 2, the output signal of the microphone 2 is input to the first amplifier 7, and the output of the first amplifier 7 is A / D. A by converter 11
A / D conversion, call data after this A / D conversion and storage unit 1
The second reference data {(X-ε) to (X + ε)} calculated by the control unit 9 based on the basic data (X) and the allowable data (ε) stored in 0 and the control unit 9, the call data exceeds (X + ε) of the second reference data, the second amplifier that drives the speaker 3 by the control unit 9 according to the difference between the call data and (X + ε). If the call data is within the second reference data {(X−ε) to (X + ε)}, the control unit 9
If the call data is less than (X-ε) of the second reference data by driving the speaker 3 with the amplification factor of the second amplifier 8 determined in advance, the call data and (X-ε) The second driving the speaker 3 by the control unit 9 according to the difference between
The amplification degree of the amplifier 8 is reduced. As a result, the switch for increasing the listening volume and the switch for reducing the listening volume, which are conventionally required, can be removed.

Next, the on-hook operation of the wireless headset 1 in the call mode will be described. The output signal of the microphone 2 is input to the first amplifier 7, the output of the first amplifier 7 is A / D converted by the A / D converter 11, and the call data and the storage unit 10 after this A / D conversion are stored. The control unit 9 compares the stored third reference data (Y) with
In addition, the control unit 9 compares the voice data transmitted from the mobile phone 4 and output via the communication unit 5 with the fourth reference data (Z) stored in the storage unit 10, and the call data and the mobile phone 4 are compared. If any of the voice data transmitted from the communication unit 5 and output from the communication unit 5 is smaller than the third reference data (Y) and the fourth reference data (Z), the speaker 3 gives a warning sound to the speaker. After the warning sound, both the call data after a lapse of a predetermined time and the voice data transmitted from the mobile phone 4 and output through the communication unit 5 are the third reference data (Y) and the fourth reference data, respectively. Reference data (Z)
If it is smaller than this, the control unit 9 outputs an on-hook signal to the communication unit 5. As a result, the call switch for on-hook, which is conventionally required, can be removed.

With the above-mentioned configuration, the call switch,
It is possible to realize a wireless headset in which both the switch for increasing the listening volume and the switch for reducing the listening volume are removed.

In the first embodiment, the average value of the call data of the speaker per fixed time and the second reference data {(X
-[Epsilon])-(X + [epsilon])} is compared in the control unit 9, and the average value is the second reference data {(X- [epsilon])-(X +).
ε)} is exceeded or less than, basic data (X) is updated to the average value by the control unit 9, and the average value is changed to the second reference data {(X-ε) to (X + ε). }
If it is within the range, if the basic data (X) is not updated, it is possible to increase or decrease the amplification degree of the second amplifier 8 that drives the speaker 3 due to the sudden loudness of the voice of the speaker. It can be prevented.

Further, in the first embodiment, the calling mode selected in advance on the mobile phone 4 side is set to the mobile phone 4
If a communication system in which the communication mode (not shown) is communicated with the communication section 5 on the wireless headset 1 side and the calling mode is stored in the storage section 10 on the wireless headset 1 side, the wireless headset 1 It is not necessary to provide a special switch on the side for selecting the calling mode.

In the first embodiment, if a speaker having a vibrate function is used as the electroacoustic transducer, the optimum vibrate or ringtone mode can be selected according to the environment of use by selecting the calling mode described above. Can be

In the first embodiment, if a bone conduction microphone is used as the microphone, it is possible to reduce the noise input to the microphone.

(Second Embodiment) FIG. 3 is a schematic configuration diagram of a wireless headset according to a second embodiment of the present invention. In the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described in detail.

In FIG. 3, 20 is a wireless headset and 21 is a bone conduction speaker. In FIG. 3, since the normal-type speaker 3 as the electroacoustic transducer shown in the first embodiment is the bone conduction speaker 21, voice data transmitted from the mobile phone 4 and output via the communication unit 5. It is not necessary to use an electro-acoustic transducer that seals the speaker's ears when transmitting voice to the speaker based on, and there is a sense of openness, and quick response to emergency calls and other information Can be achieved. The position where the bone conduction speaker 21 is installed is not limited to the front part of the ear, and can be appropriately provided at a predetermined position in the peripheral part of the ear. Further, if the bone conduction speaker 21 is installed so as to be pressed to the head side, the efficiency of transmitting the voice to the speaker is further improved.

(Third Embodiment) FIG. 4 is a formant frequency characteristic diagram of a speaker used in a wireless headset according to a third embodiment of the present invention. In FIG. 4A, the first formant frequency, the second formant frequency, and the third formant frequency when the consonant part transits from the consonant part to the transient part and thereafter to the vowel part by the voice of the speaker are shown. In FIG. 4 (b),
The difference of the 1st formant frequency, the 2nd formant frequency, and the 3rd formant frequency of each vowel is shown. Figure 4
Since the characteristics of the first formant frequency, the second formant frequency, and the third formant frequency shown in (a) and (b) are different for each speaker, these characteristics can be used for the wireless headset described in the first embodiment. it can.

The outline of the operation will be described below.

The voice of the speaker is input to the microphone 2 in advance, the output signal of the microphone 2 is input to the first amplifier 7, and the first
The output signal of the amplifier 7 of the A / D converter 11
The control unit 9 converts the frequency spectrum based on the signal output from the A / D converter 11 and registers the processed data in the storage unit 10 as formant frequency data. Various processing can be performed based on the formant frequency data characterized by.

The detailed operation will be described below.

Based on the formant frequency data stored in the storage unit 10 in advance, the control unit 9 performs predetermined arithmetic processing to obtain a 128-bit PIN code. This PI
N code to wireless headset 1 and Bluetooth
If it is used for authentication when wirelessly connecting to the mobile phone 4 that conforms to the th standard, not only can highly secure connection authentication be performed, but a special input device or peripheral device can be used to enter the PIN code. You don't have to.

After switching to the call mode, the voice of the speaker who has entered the microphone 2 is output from the microphone 2, and the output signal of the microphone 2 is input to the first amplifier 7 and then the first amplifier 7 outputs. The output is A / D converted by the A / D converter 11, and the control unit 9 analyzes the frequency spectrum of the call data after the A / D conversion, and the processed data and the data stored in the storage unit 10 in advance. The control unit 9 compares the talker's formant frequency data, and only when the processed data includes the formant frequency data, the control unit 9 controls the second amplifier 8 for driving the speaker 3 according to the call data. The amplification degree can be changed.

(Fourth Embodiment) FIG. 5 is a schematic configuration diagram of a credit processing system including a wireless headset and a communication device according to a fourth embodiment of the present invention. In the fourth embodiment, the same components as those in the first embodiment are designated by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described in detail.

In FIG. 5, 30 is a cashier counter and 31
Is a terminal device for credit processing as a communication device wirelessly connected to the wireless headset 1 in conformity with the Bluetooth standard. The wireless headset 1 and the terminal device 31 constitute a credit processing system. In this credit processing system, Bluet
By using the oooth address as a personal identification number during credit processing, not only can voice and data communication that makes use of the features compliant with the Bluetooth standard, but also you can shop quickly without using a credit card. it can.

In the fourth embodiment, the wireless headset 1, the wireless headset 1 and the Blue
Although the credit processing system including the credit processing terminal device 31 as a communication device wirelessly connected in conformity with the Bluetooth standard has been described, a wireless headset, a wireless headset, and Bluetooth.
In a system provided with a communication device that conforms to the standard and is wirelessly connected and has a cache service processing function,
By using the Bluetooth address as the personal identification number when receiving the cache service and using the PIN code as the personal identification number when receiving the cache service, not only voice and data communication that makes use of the features compliant with the Bluetooth standard can be achieved, It is possible to realize a cash service system that receives a cash service while maintaining prompt and high security without using a credit card or a cash card.

Further, by equipping the helmet with the wireless headset described in the first to third embodiments, even if both hands are blocked by work or the like, voice and data can be transmitted without operating the switch on the helmet side. Can communicate.

Further, in an internet telephone system including the wireless headset described in the first to third embodiments and a communication device having an internet telephone function wirelessly connected to the wireless headset, work with both hands. However, you can make a phone call without manually operating the switch on the wireless headset side.

Also, a hands-free vehicle such as a two-wheeled vehicle or a four-wheeled vehicle equipped with the wireless headset described in the first to third embodiments and a communication device having a telephone function wirelessly connected to the wireless headset. The system allows voice and data communication without having to manually operate switches on the wireless headset side while driving. In particular, if a wireless headset having a bone conduction speaker is used, not only can there be a feeling of openness, but also prompt response to emergency calls and other information can be achieved.

In the first to fourth embodiments,
Mobile phones as communication devices, terminal devices for credit processing,
Although the explanation has been made using the cash service terminal device, it is not necessarily limited to this, and the PDA, personal computer,
Various devices such as small mobile terminal devices can be used.

Further, in the first to fourth embodiments,
Regarding the wireless connection between the wireless headset system and the communication device, only the example based on the Bluetooth standard has been described. However, the wireless connection is not necessarily limited to this, and IEEE802.11a, IEEE80
It is also possible to use a wireless connection that complies with either the 2.11b or the IEEE Wireless 1394 standard.
This enables high speed communication of voice and data.

[0056]

As described above, according to the present invention, the communication unit for wirelessly connecting to the communication device, the voice CODEC connected to the communication unit, and the first voice connected to the voice CODEC. An amplifier, a microphone connected to the first amplifier, a second amplifier connected to the audio CODEC, and an electroacoustic transducer connected to the second amplifier,
A control unit connected to the communication unit, a storage unit connected to the control unit, an A / D converter provided between the control unit and the first amplifier, the control unit and the A D / A converter provided between the second amplifier and the second amplifier, wherein the storage unit has predetermined first reference data (W), basic data (X), allowable data (ε), and The third reference data (Y) and the fourth reference data (Z) are stored, an incoming signal is received from the communication device via the communication unit, and a signal corresponding to the incoming signal is input to the voice CODEC. When the output signal is sent from the voice CODEC to the second amplifier and the acoustic transducer is driven by the second amplifier, the voice of the speaker is input to the microphone,
A signal corresponding to this voice is output from the microphone to the first amplifier, the output signal of the first amplifier is A / D converted by an A / D converter, and output from the A / D converter. The voice data and the first reference data (W) stored in the storage unit are compared in the control unit, and when the voice data exceeds the first reference data (W),
An off-hook signal is output from the control unit to the communication unit, a call mode is switched to, a voice of a speaker is input to the microphone during the call mode, and an output signal of the microphone is input to the first amplifier. The output of the first amplifier is A / D converted by the A / D converter, and the call data after the A / D conversion, the basic data (X) and the allowance data (ε) stored in the storage unit are stored. The second reference data {(X-ε) to (X +
ε)} in the control unit, and if the call data exceeds (X + ε) of the second reference data, depending on the difference between the call data and the (X + ε),
The control unit increases the amplification degree of the second amplifier that drives the acoustic transducer, and the call data is transferred to the second amplifier.
Of the reference data {(X−ε) to (X + ε)}, the acoustic converter is driven by the amplification degree of the second amplifier predetermined by the control unit, and the call data is When it is less than (X-ε) in the second reference data, the second amplifier that drives the acoustic transducer by the control unit according to the difference between the call data and the (X-ε). Of the communication data after the A / D conversion and the third reference data (Y) stored in the storage unit are compared in the control unit and transmitted from the communication device. The control unit compares the voice data output via the communication unit with the fourth reference data (Z) stored in the storage unit, and the communication data is transmitted from the communication device and the communication unit. Any of the audio data output via When it is smaller than the third reference data (Y) and the fourth reference data (Z), the electroacoustic transducer gives a warning sound to the speaker, and after the warning sound, a predetermined time elapses, and When both the call data and the voice data transmitted from the communication device and output via the communication unit are smaller than the third reference data (Y) and the fourth reference data (Z), respectively,
Since the control unit outputs the on-hook signal to the communication unit, a wireless headset without the call switch, the switch for increasing the listening volume and the switch for reducing the listening volume is realized. be able to.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a communication system including a wireless headset and a mobile phone according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of the wireless headset.

FIG. 3 is a schematic configuration diagram of a wireless headset according to a second embodiment of the present invention.

FIG. 4 (a) is a formant frequency characteristic diagram of a speaker used in the wireless headset according to the third embodiment of the present invention. FIG. 4 (b) is a diagram for explaining a difference in vowels of the same formant frequency.

FIG. 5 is a schematic configuration diagram of a credit processing system including a wireless headset and communication equipment according to a fourth embodiment of the present invention.

FIG. 6 is a schematic configuration diagram of a communication system including a conventional wireless headset and a mobile phone.

[Explanation of symbols]

1,20 wireless headset 2 microphone 3 speakers 4 mobile phones 5 Communication unit 6 Voice CODEC 7 First amplifier 8 Second amplifier 9 control unit 10 memory 11 A / D converter 12 D / A converter 21 Bone conduction speaker 30 cashier counter 31 Credit processing terminal equipment

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tadashi Katsukawa             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Toshihiko Ohashi             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yosuke Mitani             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 5K023 AA07 BB18 EE03 EE17                 5K027 AA11 BB02 DD16 EE00 EE02                       FF29 HH03 HH26                 5K067 AA34 BB03 FF38 GG01 GG11

Claims (21)

[Claims] 1. A communication unit for wirelessly connecting to a communication device, and a voice CODEC connected to the communication unit,
A first amplifier connected to the audio CODEC, a microphone connected to the first amplifier, and the audio CODE
A second amplifier connected to C, an electroacoustic transducer connected to the second amplifier, a control unit connected to the communication unit, a storage unit connected to the control unit, and the control And a D / A converter provided between the control unit and the second amplifier, and an A / D converter provided between the control unit and the second amplifier. Is a predetermined first
Reference data (W), basic data (X), permissible data (ε), third reference data (Y), and fourth reference data (Z) are stored, and are transmitted from the communication device via the communication unit. An incoming signal is received, a signal corresponding to the incoming signal is input to the voice CODEC, an output signal is sent from the voice CODEC to the second amplifier, and the acoustic transducer is driven by the second amplifier. In this case, the voice of the speaker is input to the microphone, a signal corresponding to this voice is output from the microphone to the first amplifier, and the output signal of the first amplifier is converted to A by the A / D converter. A / D conversion is performed, the voice data output from the A / D converter is compared with the first reference data (W) stored in the storage unit in the control unit, and the voice data is the first When the reference data (W) is exceeded Off-hook signal is output to the communication unit from the control unit, switches to speech mode,
The voice of the speaker is input to the microphone during the call mode, the output signal of the microphone is input to the first amplifier, and the output of the first amplifier is A / D converted by the A / D converter. , The second reference data calculated by the control unit based on the A / D converted call data, the basic data (X) and the allowable data (ε) stored in the storage unit, and obtained. (X−ε) to (X + ε)} are compared in the control unit, and when the call data exceeds (X + ε) of the second reference data, the call data and the (X
+ [Epsilon]), the amplification degree of the second amplifier that drives the acoustic transducer is increased by the control unit, and the call data becomes the second reference data {(X- [epsilon])-
If it is within (X + ε)}, the acoustic transducer is driven by the amplification degree of the second amplifier that is predetermined by the control unit, and the call data is (X) of the second reference data. If less than −ε), the amplification degree of the second amplifier that drives the acoustic transducer is reduced by the control unit according to the difference between the call data and the (X−ε),
The control unit compares the A / D converted call data with the third reference data (Y) stored in the storage unit, and outputs the communication data transmitted from the communication device via the communication unit. The voice data to be transmitted and the fourth reference data (Z) stored in the storage unit are compared in the control unit, and the call data and the voice transmitted from the communication device and output via the communication unit. When all of the data are smaller than the third reference data (Y) and the fourth reference data (Z), the electroacoustic transducer issues a warning sound to the speaker, and after this warning sound, a predetermined sound is given. After the lapse of time, both of the call data and the voice data transmitted from the communication device and output through the communication unit are more than the third reference data (Y) and the fourth reference data (Z), respectively. If small, before Wireless headset that is configured to output an on-hook signal to the communication unit from the control unit. 2. The wireless headset according to claim 1, wherein the control unit updates the basic data (X) previously stored in the storage unit according to the call data of the speaker. 3. A control unit compares an average value of talker's call data per unit time with second reference data {(X-ε) to (X + ε)}, and the average value is the second value. Exceeds the reference data {(X−ε) to (X + ε)}, or
If it is less than, the basic data (X) is updated to the average value by the control unit, and if the average value is within the second reference data {(X−ε) to (X + ε)}, The wireless headset according to claim 2, wherein the basic data (X) is not updated. 4. The wireless headset according to claim 1, wherein the electroacoustic transducer is a bone conduction speaker. 5. The wireless headset according to claim 4, wherein the bone conduction speaker is arranged at a predetermined position on the periphery of the ear of the speaker. 6. The wireless headset of claim 5, wherein the bone conduction speaker is positioned to press the speaker's head. 7. A voice of a speaker is input to a microphone in advance, an output signal of the microphone is input to a first amplifier, and an output signal of the first amplifier is A / D converted by an A / D converter. The wireless headset according to claim 1, wherein a frequency spectrum analysis process is performed in the control unit based on the signal output from the A / D converter, and the processed data is registered in the storage unit as formant frequency data. 8. The control unit analyzes the frequency spectrum of the call data, compares the processed data with the formant frequency data of the speaker stored in the storage unit in advance, and compares the processed data. 8. The wireless headset according to claim 7, wherein, when the formant frequency data is included in, the amplification degree of the second amplifier that drives the electroacoustic transducer is changed by the control unit according to the call data. . 9. The wireless headset according to claim 7, wherein formant frequency data stored in advance in the storage unit is used as a PIN code. 10. A wireless connection to a communication device is Blu
The wireless headset according to claim 1, which complies with the etoth standard. 11. The wireless headset according to claim 10, the wireless headset and Bluetooth.
A credit processing system that is wirelessly connected in conformity with the oth standard and that includes a communication device having a credit processing function, and that uses a Bluetooth address as a personal identification number during credit processing. 12. The wireless headset according to claim 9, and the wireless headset and Bluetooth.
wireless communication that is compliant with the th standard and that includes a communication device having a cache service processing function.
A cash service system in which the th address is used as a personal identification number when receiving a cash service, and a PIN code is used as a personal identification number when receiving a cash service. 13. The wireless headset according to claim 9, wherein the PIN code has been subjected to predetermined arithmetic processing in the control unit based on the formant frequency data. 14. The wireless connection between the communication device and the IEEE
E802.11a, IEEE802.11b or IE
The wireless headset of claim 1, which is compliant with any of the EE wireless 1394 standards. 15. The microphone is a bone conduction microphone.
Wireless headset described in. 16. A communication device and a call mode selected in advance on the communication device side are communicated from the communication unit of the communication device to the communication unit on the wireless headset side according to claim 1, and the call mode is set to the wireless mode. A communication system designed to be stored in a storage unit on the headset side. 17. The communication system according to claim 16, wherein the calling mode is either a vibrate mode or a ringtone mode. 18. A helmet comprising the wireless headset according to claim 1. 19. An internet telephone system comprising the wireless headset according to claim 1 and a communication device having an internet telephone function wirelessly connected to the wireless headset. 20. A handsfree system for a vehicle, comprising the wireless headset according to claim 1 and a communication device having a telephone function wirelessly connected to the wireless headset. 21. The wireless headset according to claim 9, and the wireless headset and Bluetooth.
a communication device that is wirelessly connected in conformity with the th standard, and is derived by predetermined arithmetic processing in the control unit based on formant frequency data for authentication when wirelessly connecting the wireless headset and the communication device. Did PI
Communication system using N code.